Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ArrayData.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 4bec1b1f7b33 |
| children |
| rev | line source |
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| 3939 | 1 /* |
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3939 | 4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
| 3939 | 8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
| 3939 | 14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 3939 | 18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 3939 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
| 34 // ArrayData | |
| 35 // | |
| 36 // A ArrayData is a base class for accessing profiling data which does | |
| 37 // not have a statically known size. It consists of an array length | |
| 38 // and an array start. | |
| 39 abstract class ArrayData extends ProfileData { | |
| 40 | |
| 41 static final int arrayLenOffSet = 0; | |
| 42 static final int arrayStartOffSet = 1; | |
| 43 | |
| 44 int arrayUintAt(int index) { | |
| 45 int aindex = index + arrayStartOffSet; | |
| 46 return uintAt(aindex); | |
| 47 } | |
| 48 int arrayIntAt(int index) { | |
| 49 int aindex = index + arrayStartOffSet; | |
| 50 return intAt(aindex); | |
| 51 } | |
| 52 | |
| 53 // Code generation support for subclasses. | |
| 54 static int arrayElementOffset(int index) { | |
| 55 return cellOffset(arrayStartOffSet + index); | |
| 56 } | |
| 57 | |
| 58 ArrayData(DataLayout layout) { | |
| 59 super(layout); | |
| 60 } | |
| 61 | |
| 62 static int staticCellCount() { | |
| 63 return -1; | |
| 64 } | |
| 65 | |
| 66 int arrayLen() { | |
| 67 return intAt(arrayLenOffSet); | |
| 68 } | |
| 69 | |
| 70 public int cellCount() { | |
| 71 return arrayLen() + 1; | |
| 72 } | |
| 73 | |
| 74 // Code generation support | |
| 75 static int arrayLenOffset() { | |
| 76 return cellOffset(arrayLenOffSet); | |
| 77 } | |
| 78 static int arrayStartOffset() { | |
| 79 return cellOffset(arrayStartOffSet); | |
| 80 } | |
| 81 | |
| 82 } |